<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>form表单</title>
    <style>
        .container {
            height: 100vh;
            background-color: beige;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .inputtest {
            height: 30px;
            width: 200px;
            border-radius: 15px;
            padding-left: 20px;
            margin-bottom: 10px;
        }
        .checkbox {
            display: flex;
            flex-direction: row;
        }
    </style>
</head>
<body>
    <form action="">
        <div class="container">
            <input type="text" placeholder="请输入用户名" name="username" class="inputtest">
            <input type="password" placeholder="请输入密码" name="password" class="inputtest">
            <div class="checkbox"> 
                <label for="前端开发">前端开发</label> <input type="checkbox"  class="inputtest" >
                <label for="鸿蒙开发">鸿蒙开发</label><input type="checkbox" class="inputtest" >
                <label for="flutter开发">flutter开发</label><input type="checkbox" class="inputtest">
            </div>
            <div class="checkbox">
               <label for="">男</label> <input type="radio" placeholder="请输入用户名" class="inputtest" name="sex">
               <label for="">女</label> <input type="radio" placeholder="请输入用户名" class="inputtest" name="sex">
            </div>
            <input type="text" placeholder="请输入用户名" class="inputtest">
            <input type="text" placeholder="请输入用户名" class="inputtest">

        </div>
    </form>
    
</body>
</html>